Dixon ZTR 4000 Series Operator's Manual page 22

CARE AND MAINTENANCE - 4000 SERIES MODELS
BELT TENSION:
ENGINE TO MOWER DECK BELT:
No adjustment required.
Correct belt tension is maintained through a fixed engine location and a spring loaded idler
system.
A pulsing movement of the belt idler will b e observed both during engagement of the
electric blade clutch and actual operation of the mower deck.
NOTE:
MOWER DECK SERPENTINE BELT:
Refer to illustration for adjustment procedure.
P/N 6111
Engagement of the electric blade clutch switch may produce a sharp high
pitched chirp or squeal as the belt tension loading is absorbed by the i dler
system. This is normal and not a sign of failure.
P/N 6109
Page 19